For more than a decade, Measurabl customers have trusted our platform to support their GRESB reporting and strengthen the quality of their sustainability data. This year marks 11 years of continuous support, and throughout that time, our customers have consistently raised the bar—improving their scores, expanding participation, and demonstrating how data-driven sustainability drives measurable results.
In 2025, that momentum continued. Measurabl customers once again outperformed global benchmarks and delivered some of their strongest results yet, extending a six-year streak of improved performance across the GRESB Real Estate Assessment.
Read on for performance highlights, how Measurabl is strengthening the reporting process for 2026, and key tips to keep in mind as reporting season approaches.
2025 GRESB Results Summary: Performance, Progress & Leadership
Scores Up Across the Board
- Average GRESB Score: 78, up 3 points from 2024
- Average Management Score: 28 (+1)
- Average Performance Score: 50 (+2)
- Among customers who improved, the average increase was 10 points, with an overall average gain of 7 points
- 52% of customers improved their scores year-over-year
Sustained Leadership & Green Star Excellence
- 75% of funds that reported achieved GRESB’s Green Star status, maintaining high standards across Management and Performance indicators
- 16 funds earned a 5-Star rating, with 12 maintaining their distinction from 2024
- 7 funds ranked No. 1 in their peer groups—continuing to prove that sustainability leadership is business leadership
New Reporters, New Data
- 8 first-time reporters joined the Measurabl GRESB cohort in 2025, accounting for ~7 % of total reporting funds
Global Highlights
Measurabl’s GRESB customers represent a globally diversified set of portfolios and strategies:
- Europe: 55 funds with an average GRESB Score of 80, representing $47.8B GAV.
- Americas: 53 funds with an average GRESB Score of 70, representing $210.9B GAV.
- Asia: 3 funds with an average GRESB Score of 74, representing $1.9B GAV.
*GRESB’s Real Estate Assessment generates two industry benchmarks:
- Standing Investments is for portfolios with operational buildings and requires the reporting on Management and Performance components;
- Development is for portfolios with new constructions or major renovation projects and requires reporting on Management and Development components.
Measurabl assists customers with Standing Investments reporting.
Elevating GRESB Reporting for 2026: Measurabl Product Enhancements
Throughout 2024 and 2025, Measurabl released important updates across various products to improve data quality and completeness, strengthen alignment with GRESB’s Asset Level Data Model, and streamline the preparation process for reporting teams. These enhancements ensure customers can identify issues earlier, correct data more efficiently, and submit more accurate and complete ALE files ahead of the 2026 assessment.
Highlights include:
- Stronger data quality workflows in Data Manager, including a revamped review experience, broader access for property teams, and new tools to resolve or delegate gaps and outliers. Upcoming features—like self-service bulk uploads and in-app comments—further streamline collaboration.
- Closer alignment with GRESB in Core, with support for GAV in the Asset Level Export, updated certification and rating mappings, fund allocation percentages, and automatic inclusion of reclaimed and well water consumption. New off-site renewable inputs ensure customers meet the latest data requirements.
- Smarter checks in Disclosure, including a new GRESB Outlier Report coming later this year to identify values GRESB may flag, helping teams prioritize fixes before submission.
Read on below to see how these enhancements will help you stay one step ahead of 2026 GRESB changes.
What’s Changing with GRESB in 2026 – and How We Help
While GRESB will release more detailed guidance soon, the updates already announced point toward a familiar but more rigorous assessment — one that places greater emphasis on high-quality performance data, credible net-zero commitments, and demonstrated implementation. Here are key changes based on what we know so far, and how Measurabl can support:
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Net-zero and climate-risk validation
GRESB is refining what counts as acceptable evidence for net-zero targets and climate-risk–related indicators, placing more emphasis on credible, well-documented data.
How Measurabl supports this: The platform helps teams prepare and organize the evidence GRESB requires by tracking long-term performance targets, aggregating technical assessments entered in the platform, and ensuring all performance data is complete and accurate through features like In-App Response Check, data quality alerts, the Data Quality Report, and Portfolio Trends.
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Greater emphasis on accurate, complete performance data
GRESB is refining how performance data must be classified and validated, raising expectations for complete, accurate energy, water, waste, and emissions data at the asset level.
How Measurabl supports this: Measurabl automatically calculates all performance indicators using data entered manually or synced through Connect. The In-App Response Check flags missing sites or meters, while data quality alerts, the Data Quality Report, and Portfolio Trends help identify gaps, anomalies, or inconsistencies before submission.
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More focus on demonstrated action rather than policies
The 2026 updates continue GRESB’s shift toward rewarding evidence of implementation — such as building audits, efficiency improvements, and certifications — instead of policy-only disclosures.
How Measurabl supports this: Measurabl aggregates audits, energy/water/waste projects, green building certifications, and energy ratings entered into the platform, making it simple to demonstrate concrete actions taken across the portfolio.
For a full list of changes, visit GRESB’s website here. Our team is here to help if you have any questions.
Ensuring Continued Progress: Collaboration with S&P Verification Services
As GRESB places increased emphasis on data quality and evidence-backed reporting, independent verification has become an effective way to improve accuracy, reduce inconsistencies, and strengthen confidence among investors and stakeholders.
Through Measurabl’s partnership with S&P Global, customers can choose to engage S&P’s Climate & Sustainability Services team to independently verify key performance data used for GRESB reporting. Their team reviews portfolio data, evaluates supporting evidence, and provides verification findings — helping ensure the data submitted is complete, consistent, and aligned with GRESB expectations. The partnership also streamlines the verification process, enabling a more efficient path to validated performance.
Setting the Standard for GRESB Success
At Measurabl, our customers don’t just meet benchmarks—they set them. With cutting-edge tools, automation, and expert support, we’re helping organizations navigate the complexities of reporting and build compelling, accurate sustainability narratives.
Ready to raise your GRESB score? Request a demo today and see how Measurabl can support your journey to leadership in sustainability.
Other resources to help you prepare for 2026
- Sustainability Benchmark 2024 Timeline
- GRESB FAQs
- How can Measurabl help me get “report ready” for GRESB?
- GRESB: 5 Steps to Success